GeoLogik SF is a program for calculating heat flow in the underground. The software is designed for shallow (means few 100 m) geothermal arrays of borehole heat exchangers (BHE). A finite element (FE) method is used for the underground model.

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TRNSYS is an extremely flexible graphically based software environment used to simulate the behavior of transient systems. While the vast majority of simulations are focused on assessing the performance of thermal and electrical energy systems, TRNSYS can equally well be used to model other dynamic systems such as traffic flow, or biological